Vertical lines on NEC monitor

[oparr]

Hi,

I have a 22" NEC FE2111SB monitor that seems to have recently
"sprouted" 7 faint vertical lines on the screen. They are most visible
on a white background and look similar to the usual 2 aperture grill
horizontal lines. Any clues as to what these vertical lines are?

 

[Arno Wagner]

Hi,

I have a 22" NEC FE2111SB monitor that seems to have recently
"sprouted" 7 faint vertical lines on the screen. They are most visible
on a white background and look similar to the usual 2 aperture grill
horizontal lines. Any clues as to what these vertical lines are?

Sounds like a problem with the VGA card. Try on a different
computer/VGA to verify. Might be a problem with some
row/column amplifiers in the video-RAM.

Arno

 

[Franc Zabkar]

I have a 22" NEC FE2111SB monitor that seems to have recently
"sprouted" 7 faint vertical lines on the screen. They are most visible
on a white background and look similar to the usual 2 aperture grill
horizontal lines. Any clues as to what these vertical lines are?

There was a very similar question at sci.electronics.repair recently:
http://groups.google.com/groups?hl=...4%40newsread1.dllstx09.us.to.verio.net&rnum=1

The OP had a SiS 6326 graphics card and a Samsung Syncmaster 793s 17"
monitor.


- Franc Zabkar

 

[oparr]

Lines are there when connected to four different computers so it's not any
particular video card. It's the monitor. Also, a Google search indicated a
similar condition with another NEC monitor;

http://groups.google.com/[email protected]&rnum=7

Wondering whether it was a NEC thing or the monitor is just defective.
Leaning towards the latter.

 

[Arno Wagner]

Lines are there when connected to four different computers so it's not any
particular video card. It's the monitor. Also, a Google search indicated a
similar condition with another NEC monitor;

Wondering whether it was a NEC thing or the monitor is just defective.
Leaning towards the latter.

I tend to agree. Pretty strange effect. Maybe a mechanical thing with
the mask?

Arno

 

[Franc Zabkar]

I tend to agree. Pretty strange effect. Maybe a mechanical thing with
the mask?

Arno

You could smack the face of the CRT and check whether the lines
vibrate.


- Franc Zabkar

 

[Not Gimpy Anymore]

Could be "yoke ringing", in which case a "tuning capacitor" on the
deflection yoke
my have failed, if it appeared recently. Ringing lines should look a bit
like waves, or
at least not narrow lines - original poster did not indicate whether they
are somewhat
wide, or maybe quite narrow (pixel size?). ringing is also typically mostly
on the left
side of the screen.
If so, what to do? Try asking NEC if they have a known problem, and how
they
satisfy their valuable customers who do see such problems.

HTH,
NGA